1 Pack contains 2 Pens - Free for Today, only pay Rs.49 for shipping This deal will expire by 15may 10am tomorrow or stock lasts  This invisible ink pen lets you write messages without leaving a trace. Use the pen's imbedded blacklight to read what you wrote. Kids love using this for writing secret notes or for diaries. Features ink made of special high-brightness compounds that are invisible to the naked eye, but magically illuminate when exposed to a blacklight. Conveniently located on the opposite end of the pen, the blacklight allows you to read any marks that you have made. Invisible marking pens for hand marking, box marking, wall decorations, and other unique security applications. Slightly visible under normal light or on light backgrounds and brightly visible under black light. Features: Invisible Writer 2 in 1 - Invisible Ink Pen + Fake Currency Detector. This invisible ink pen lets you write messages without leaving a trace. Use the pen's imbedded blacklight to read what you wrote. Kids love using this for writing secret notes or for diaries. http://dailydealbazaar.com/invisible-ink-uv-pen  [Expired]